Better re-use of swc source files

[kitsonk]

We don't really leverage swc source files efficiently, where deno lint, deno doc, deno bundle, the module graph and dependency analysis can often reparse the same file multiple times. With the forthcoming language server it becomes even more evident. We should consider a better was of refactoring to reuse this structures where applicable.

[stale]

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[dsherret]

Closing this because of #11780.

The rest of the re-use will be done with the more complete integration of deno_graph.